Skip to main content
Selfa Brand review

SV120M.3.2-370

370 Wp PERC
ComparePV verdict

Efficiency leader, no clear weak spot

Rank 12,583 of 14,129
Compare panels Datasheet PDF
Power (Wp)
370
Typical for its class
Efficiency (%)
20.30
Strong · top 16%
Density (Wp/m²)
202.8
Strong · top 18%
Temp (%/°C)
-0.360
Typical · median -0.350
Weight (kg)
20.3
Typical · median 21.4 kg
Warranty (yrs)
25
Typical · median 25 yrs

The SV120M.3.2 series consists of monocrystalline photovoltaic modules manufactured in Poland, designed for installations where both reliable performance and mounting aesthetics matter. The panels feature half-cut cells built on PERC technology along with a 9 busbar layout, resulting in reduced resistive losses, better resistance to microcracks, and improved efficiency even under partial shading. The distinctive, elegant black anodized frame combined with tempered anti-reflective glass makes the series an excellent fit for residential roofs, where visual appeal matters just as much as energy output. An IP68-rated junction box with three bypass diodes ensures safe operation and resistance to moisture and dirt in demanding weather conditions. An additional advantage is the positive power tolerance only, giving investors confidence that the installation will reach or exceed its declared output. This makes the series a solid choice for those seeking a proven European manufacturer that combines robust build quality with a competitive price, suitable for both residential and commercial installations.

Ranking

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.30% 19.90% Strong · top 16% 11,851
Power density 202.8 199.0 Strong · top 18% 11,890
Temperature coefficient -0.360 -0.350 Typical 12,425
Weight per kWp 54.9 55.8 Typical 9,334
Performance warranty 25 yrs 25 yrs Typical 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 0 caution
Best for

Residential, commercial and shaded-installations.

Strengths
20.30% module efficiency

Top 16% of the PERC 350-400 W segment, against a median of 19.90%.

202.8 watts per square metre

Top 18% of the PERC 350-400 W segment, against a median of 199.0.

Notes from the database
  • Efficiency of 20.3% is 0.9pp above the PERC 0-400W median (19.4%)
  • At 202.8 W/m² power density, this panel generates 8.6 W/m² more per unit area than PERC 0-400W median (194.2 W/m²)
  • At -0.36%/°C, hot weather performance is typical for PERC 0-400W panels
  • #11851 for efficiency, #12425 for temperature performance out of 14129 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 370 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.30 % Strong Segment median 19.90%
Vmpp · Impp 34.30 V · 10.79 A Operating point at max power
Voc · Isc 40.90 V · 11.49 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1756×1039×35 mm · 1.82 m² of roof
Weight 20.3 kg Typical Typical · median 21.4 kg
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.360 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.310 · 0.060 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 91.8 % Equals 335 W guaranteed
Degradation 3.00 → 0.22 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Selfa in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 370 Wp appear here. The rest cover the whole series.

Linear Power Warranty Linear Power Warranty Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.360 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Selfa SV120M.3.2-370 370 W 20.30% -0.360 20.3 kg You are here
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +2.8 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +2.8 pp
GKA210M320W 320 W 23.00% - 16.2 kg -50 W, +2.7 pp, +5 yr warranty
GKA210M340W 340 W 23.00% - 16.2 kg Lighter, +2.7 pp, +5 yr warranty
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +2.7 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg Lighter, +2.7 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +30 W, +2.7 pp, +5 yr warranty
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg +30 W, +2.7 pp, +5 yr warranty
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg Lighter, +2.7 pp, +5 yr warranty
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Cooler, +2.3 pp, +15 yr warranty
SV120M.3.2-310 310 W 17.00% -0.360 20.3 kg -60 W, -3.3 pp
SV120M.3.2-360 360 W 19.70% -0.360 20.3 kg -10 W, -0.6 pp
SV120M.2.2-360 360 W 19.70% -0.360 20.3 kg -10 W, -0.6 pp
SV120M.3.2-365 365 W 20.00% -0.360 20.3 kg -0.3 pp
SV120M.3.3-370 370 W 20.00% -0.360 20.0 kg -0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +140 W, cooler, +4.7 pp

Found 210 panels of the same or similar size to this one, within ±10 mm. See them here Found 271 panels of the same or similar size to this one, within ±25 mm. See them here Found 332 panels of the same or similar size to this one, within ±50 mm. See them here Found 4194 panels of the same or similar size to this one, within ±100 mm. See them here

About the SV120M.3.2 series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Is the Selfa SV120M.3.2 series still available for purchase?
The SV120M.3.2 series has been discontinued by Selfa and replaced by newer models, such as the SV120M.3.3. Units may still be found at distributors selling off remaining stock, but once inventory is depleted, new purchases will no longer be possible. The manufacturer's warranty remains fully valid for panels already purchased and installed, regardless of the series being discontinued.
What warranty comes with the Selfa SV120M.3.2 panels?
The panels are covered by a 12-year product warranty against material and workmanship defects, plus a 25-year linear power output warranty. Thanks to a positive-only power tolerance from the factory, the installation performs at the rated 370 Wp or higher from day one, reducing the risk of underestimated yield during system design.
Are SV120M.3.2 panels suitable for mounting on a sloped residential roof?
Yes, with dimensions of 1756×1039×35 mm and a weight of about 20.3 kg, these panels work well on typical sloped-roof mounting structures. The sleek black anodized frame blends with roof coverings, while half-cut cells improve tolerance to partial shading from chimneys, antennas, or dormers, a common issue in residential installations.
What do half-cut cells and 9 busbars deliver in the Selfa SV120M.3.2 panels?
Half-cut cells are physically split in half, which reduces current losses and internal resistance while increasing resistance to microcracks that can form during transport and installation. The 9-busbar layout on PERC cells improves current collection across the cell surface, giving the panel around 20.3% efficiency and more stable output even under partial shading.
Do Selfa SV120M.3.2 panels perform well in low temperatures?
Yes, the module has a power temperature coefficient of -0.36%/°C, meaning a relatively small output drop as ambient temperature rises. In practice, this means that in cooler conditions, such as spring or autumn in Poland, the panel can reach output close to or above its rated 370 Wp power.
How does the positive-only power tolerance of the Selfa SV120M.3.2 differ from typical panels?
Many panels have a bidirectional power tolerance, for example ±3%, meaning the purchased module could underperform its rated power. The SV120M.3.2 has a positive-only power tolerance, so actual panel output is never below the stated 370 Wp and may be slightly higher. This gives investors confidence in the real yield of the entire installation already at the design stage.
Add to compare